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suter [353]
3 years ago
13

Solve the system by the elimination method 7x+5y=-25 5x+3y=-23

Mathematics
1 answer:
aksik [14]3 years ago
5 0

Step-by-step explanation:

7x+5y=25 ×3 7×-1.5+5y=25

5x+3y= -23 ×5 -10.5 +5y =25

5y= 25 + 10.5

21x+15y=75 5y= 35.5

25x+15y=69 y= 7.1

-4x=6

x=-1.5

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a shopkeeper buys cocacola 60 rupees a dozen and sell 6 rupees per bottle find his profit or loss persentage​
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Answer:

20%

Step-by-step explanation:

12 bottle is 60 rupees

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3 years ago
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What is 74,233 increased by 58,490
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If their is 300 unicorns and 200 dragons and 50 dragons fly away then 30 unicorns walk away how many are of each left?
Lilit [14]

Answer:

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7 0
2 years ago
Question 4.
Ludmilka [50]

Answer:

  9.80 m

Step-by-step explanation:

The mnemonic SOH CAH TOA is intended to remind you of the relationship between sides of a right triangle and its angles.

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<h3>setup</h3>

The geometry of this problem can be modeled by a right triangle, so these relations apply. We are given an angle and adjacent side, and asked for the opposite side, so the relation of interest is ...

  Tan = Opposite/Adjacent

Using the given values, we have ...

  tan(24°) = AC/AB = (tree height)/(distance from tree)

  tan(24°) = AC/(22 m)

<h3>solution</h3>

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The height of the tree is about 9.80 meters.

5 0
2 years ago
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